LNER Thompson Class Q1
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| Type and origin | |
|---|---|
| Power type | Steam |
| Designer | Edward Thompson (rebuild) |
| Rebuild date | 1942–1945 |
| Number rebuilt | 13 |
| Specifications | |
|---|---|
| Configuration: |
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| • Whyte | 0-8-0T |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) standard gauge |
| Driver dia. | 4 ft 8 in (1.422 m) |
| Loco weight | Q1/1: 69.9 long tons (71.0 t; 78.3 short tons) Q1/2: 73.65 long tons (74.83 t; 82.49 short tons) |
| Fuel type | Coal |
| Fuel capacity | Q1/1: 4.5 long tons (4.6 t; 5.0 short tons) Q1/2: 4 long tons (4.1 t; 4.5 short tons) |
| Water cap | Q1/1: 1,500 imp gal (6,800 l; 1,800 US gal) Q1/2: 2,000 imp gal (9,100 l; 2,400 US gal) |
| Boiler pressure | 180 psi (1.2 MPa) |
| Cylinders | Two outside |
| Cylinder size | 19 in × 26 in (483 mm × 660 mm) |
| Valve gear | Stephenson |
| Performance figures | |
|---|---|
| Tractive effort | 25,645 lbf (114.07 kN) |
| Career | |
|---|---|
| Operators | |
| Class | Q1 |
| Power class | 5F |
| Withdrawn | 1954–1959 |
| Disposition | All scrapped |
The London and North Eastern Railway (LNER) Thompson Class Q1 was a class of 0-8-0T steam locomotives. They were rebuilds of the GCR Class 8A (LNER Class Q4) 0-8-0s. Thirteen were rebuilt between 1942 and 1945. All passed to British Railways in 1948, numbered 69925-69937. The sources for the information in the infobox (right) are.
The locomotives had outside cylinders with inside valves and inside Stephenson valve gear. There were two variants:
The extra 500 imperial gallons (2,300 l; 600 US gal) of water in the Q1/2 was carried in the rear tank, under the coal bunker, resulting in a reduced coal capacity.
All the Class Q1 locomotives were withdrawn and scrapped from 1954 to 1959. None have been preserved.
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Wikipedia